Alvia byron smith



(No Model.)

A. B. SMITH. HORSESHOE OALK SHARPBNER.

No. 521,513. Patented June 19, 1894.

UN TED STATES PATENT OFFICE.

ALVIA BYRON, SMITH, OF MIDDLEBURY, VERMONT.

HORSESHOE-CALK SHARPENER.

SPECIFICATION forming part of I Letters Patent No. 521,513, dated June 19, 1894.

Application filed March 3, 1894:- Serial No. 502,229. (No model.) 4

This invention is an improvement in ma-.

chines and tools especially designed for use in tr mming horse hoofs, grinding and cutting calks, polishing and burnishing, and otherwise applicable to various useful purposes.

Theinventionconsists in the novel constructions and combinations of parts, hereinafter described in detail, and as stated in the claims. In the accompanying drawings? Figure 1 is an elevation of the complete machine. Fig. 2 is a detail front view thereof. Fig. 3 is a detail view of a preferred form of tool holding frame. Fig.4 is a detail view of the conerasp. Fig. 5 illustrates a modification.

Referring to said drawings by letter A designates a standard mounted on a base A or other suitable support. In this standard is journaled a horizontal shaft B upon one end of which is fixed a crank wheel B by which the shaft may be turned by hand; but it may be rotated mechanically, as by a pulley b thereon belted to a suitable motor. The other end of the shaft is connected by a universal joint 0 to a stub shaft D journaled on one end of a frame E,-(which maybe a single bar if desired)--ab0ut four feet long, in

the opposite end of Which is journaled a stub shaft F, upon which is fixed a pulley f, driven bya belt G from a pulley don shaft D. The frame E is normally held at about right angles to shaft 13, and parallel with the standard, by a spring bar H, one end of which is connected to the side of the frame, and the other end to an arm 2' on an annular plate I which is rotarily adjustable on an annular plate J, secured to standard A around shaft B. Plate I has a number of ears I on its periphery which are bent over the edges of plate J, thereby fastening plate I thereto, but permitting it to be rotated thereon. A spring catch K may be attached to arm 1', and its tooth 1 playing through a perforation in plate I can be engaged with any one of a series of openings j in plate J, thereby locking plate I in any desired position, to hold frame E at any angle to the standard, and at the same time allow its outer end to be moved away from the standard overcoming the resistance of spring H, which however will throw the frame back to a position about at right angles to shaft B when said frame is released. A

loop E attached to frame E near shaftD embraces spring I-I loosely and will arrest the bowingof it after the frame is swung to a certain extent, thus stiffening the spring.

A rod M is connected at one end by a universal joint L to shaft F, and at its other end bya section m of flexible shafting, of any suitable kind, to a stub-shaft 'n journaled,.in a suitable hand frame; as shown in Fig. 1 the hand frame is simply a straight bar T in the center and transversely of which the shaft 71, is journaled, and suitable handles are attached to its outer ends, one of said handles being provided with an adjustable grip piece P as shown.

While the size and shape of the tool holder may be varied to suit different people or tools, I prefer the-holder shown in Fig. 3, which consists of a triangular frame N, at two opposite corners of which are handles 0, P, standing at about right angles to the stub shaft n, and as shown adj ustably secured to the frame by set screws 0, 10, respectively, so that they can be set to suit the operator. HandleP is provided with an adjustable diagonal grip piece P made in two parts, one end of it screwing into the other end and forming the means for securing the grippiece on the handle in any desired position.

From the foregoing description, and the drawings, it will be understood that when shaft B is revolved motion is transmitted to shaft 01., and the latter can be moved with frame N to any place desired within the range of movement allowed by the swinging frame E, the flexible shafting, and universal joint connections, and it can also be turned at any angle desired.

On the end of shaft n is secured the tool which is to be used, such as a burr, cutter, polisher, trimmer, &c., which can be operated by rotary motion.

Q represents a conical rasp, shown detached teeth out through. With it the operator can quickly dress down a hoof so as to fit a shoe thereto without burning the hoof or otherwise injuring it, it .can also be used to clean out the hoof, and is a very useful tool. The cone may be removed and disk-rasps, cutters, 85c substituted therefor. The peculiar shapeof the tool holding frame N and the adjustability of its handles enable the operator to employ the tool with ease,-and accurately, and

the work performed neatlyandtspeedily.

When the machine is worked by power, or for convenience, .the standard A may be replaced by a bracket, which loan be.fastened to theside wall, or to the ceiling,.asindicated in dotted lines Fig. 1, and in Fig. 5, which. enables the parts to be folded out of the way when not in use; and I propose securing the bracket overhead,s0. as to :have the greatest range possible. ,When securedoverhead the spring 1 1 canbe dispensed with, and a Weight U substituted therefor, as indicatedinl fig. 5, the weight serving to swing the frame up against a Wall or ceiling .out of the way, except when the machine isin use.

Havingthus described my invention, what I claim, as new, and desireto secure by Letters .Patent thereon, is 1. The combination of a driving shaft, a

frame, .a stubshaft j ournaled ,:in said frame,

andau niversal joint connection between said constitutinga connection between the frame and drivlingshaft, and suspending the former .substantiallyas set forth.

2. "The combinationof the hand frame, the; handlesadj ustably attached thereto,.and the 1% tool carrying shaft journaled therein, with: theflexibleshafting connections between said i tool carryingshaft and amain driving shaft,l

substantially as described.

3. Thecom'binationofthetriangularframe,j aitool carrying .shaft journaled therein, the.

stub ,shaft and driving shaft, said joint also handles adj ustably attached to the frame, and the grip piece adjustably attached to one of the handles, substantially as set forth.

4. The combination of a main shaft journaled in a suitable support, and means for rotating it, a frame carrying stub shafts at its opposite cndsnauniversal joint connection between one of the stub shafts and the main shaft, whereby the frame is supported on the main shaft means for driving one of the stub shafts from the other, a rod connected to the second stub shaft by a universal joint, a holder fora rotating tool provided with adjustable handles, and a flexible connection between said rod and the tool holder, substantially as described.

5. The combination of the standard, the plate fined thereon, the rotatable plate attached ,to and adjustable on .the ,1fixed .plate,a springsupportedonsaidmovableplateamain shaft on the standard, and-aframeupheldby thespring and .adjustablysupported on the mainshaft, a toolholdenhflexible connections between said holderandthe outerendofsaid frame, and means for transmitting motion from a main shaft Onthe standard along'said frame and flexible connections to the toolholder, substantially as specified.

6. The combination of the main shaft, a support therefor, ,an adjustable frame,.supported on and connected ,to the mainshaft ,stubshafts journaled intoppositeendsofsaid ,frame, ,a universal jointconnection .between one of said shafts .andthe ,main shaft, and ,pulleysand beltfor.transmittingmotion from one .of the stub shafts ,to the other, an adjustablespring .mounted on .the support ,for upholding andadjusting the position of the frame relative thereto with a frame provided with handles, a rotating ltoolaholding shaft journaled in said hand framaand flexible connections between .the .toolwholding shaft and the stub shaft onthe free end .of the springcontrolled frame,.all constructed substantially as and for the ,purpose set ,forth.

In testimonythat Iclaimthe foregoing-as .myownI aiiix my signature in presence of two witnesses.

.ALVIA BYRON SMITH. Witnesses:

MILTON A. BROOKS,

Llzzin M. BROOKS. 

